X0306 4 2023-01-03 0 0001512673 Block, Inc. SQ 0001803649 Grassadonia Brian 1455 MARKET STREET SUITE 600 SAN FRANCISCO CA 94103 0 1 0 0 Cash App Lead Class A Common Stock 2022-11-15 5 A 0 E 2 62.37 A 243141 D Class A Common Stock 2023-01-03 4 S 0 3456 64.28 D 239685 D Class A Common Stock 2023-01-04 4 S 0 5253 65.76 D 234432 D These shares were acquired under the Issuer's Employee Stock Purchase Plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c). Represents the number of shares automatically sold to satisfy the Issuer's income tax withholding and remittance obligations in connection with the vesting of restricted stock and restricted stock units. The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan. /s/ Susan Szotek, Attorney-in-Fact 2023-01-05